Package io.deephaven.extensions.barrage.chunk

Class FixedWidthChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>>

java.lang.Object

io.deephaven.extensions.barrage.chunk.BaseChunkWriter<SOURCE_CHUNK_TYPE>

io.deephaven.extensions.barrage.chunk.FixedWidthChunkWriter<SOURCE_CHUNK_TYPE>

All Implemented Interfaces:

ChunkWriter<SOURCE_CHUNK_TYPE>

Direct Known Subclasses:

BigDecimalChunkWriter, FixedWidthObjectChunkWriter

public abstract class FixedWidthChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>>
extends BaseChunkWriter<SOURCE_CHUNK_TYPE>

Nested Class Summary

Nested classes/interfaces inherited from class io.deephaven.extensions.barrage.chunk.BaseChunkWriter

BaseChunkWriter.ChunkTransformer<SOURCE_CHUNK_TYPE extends Chunk<Values>>, BaseChunkWriter.SerContext

Nested classes/interfaces inherited from interface io.deephaven.extensions.barrage.chunk.ChunkWriter

ChunkWriter.BufferListener, ChunkWriter.Context, ChunkWriter.DrainableColumn, ChunkWriter.Factory, ChunkWriter.FieldNodeInfo, ChunkWriter.FieldNodeListener

Field Summary

Fields inherited from class io.deephaven.extensions.barrage.chunk.BaseChunkWriter

dhNullable, elementSize, fieldNullable, PADDING_BUFFER, REMAINDER_MOD_8_MASK

Constructor Summary

Constructors

Constructor	Description
FixedWidthChunkWriter(@Nullable BaseChunkWriter.ChunkTransformer<SOURCE_CHUNK_TYPE> transformer, @NotNull Supplier<SOURCE_CHUNK_TYPE> emptyChunkSupplier, int elementSize, boolean dhNullable, boolean fieldNullable)

Method Summary

Modifier and Type	Method	Description
ChunkWriter.DrainableColumn	getInputStream(@NotNull ChunkWriter.Context context, @Nullable RowSet subset, @NotNull BarrageOptions options)	Get an input stream optionally position-space filtered using the provided RowSet.
protected abstract void	writePayload(@NotNull ChunkWriter.Context context, @NotNull DataOutput dos, @NotNull RowSequence subset)

Methods inherited from class io.deephaven.extensions.barrage.chunk.BaseChunkWriter

computeNullCount, getEmptyInputStream, getNumLongsForBitPackOfSize, getValidityMapSerializationSizeFor, isFieldNullable, makeContext, writeValidityBufferInternal

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FixedWidthChunkWriter

public FixedWidthChunkWriter(@Nullable
 @Nullable BaseChunkWriter.ChunkTransformer<SOURCE_CHUNK_TYPE> transformer,
 @NotNull
 @NotNull Supplier<SOURCE_CHUNK_TYPE> emptyChunkSupplier,
 int elementSize,
 boolean dhNullable,
 boolean fieldNullable)

Method Details

getInputStream

public ChunkWriter.DrainableColumn getInputStream(@NotNull
 @NotNull ChunkWriter.Context context,
 @Nullable
 @Nullable RowSet subset,
 @NotNull
 @NotNull BarrageOptions options)
                                           throws IOException

Description copied from interface: ChunkWriter

Get an input stream optionally position-space filtered using the provided RowSet.

Parameters:

context - the chunk writer context holding the data to be drained to the client

subset - if provided, is a position-space filter of source data

options - options for writing to the stream

Returns:

a single-use DrainableColumn ready to be drained via grpc

Throws:

IOException

writePayload

protected abstract void writePayload(@NotNull
 @NotNull ChunkWriter.Context context,
 @NotNull
 @NotNull DataOutput dos,
 @NotNull
 @NotNull RowSequence subset)